This could prove to be very useful in the event of future Pownce/Jaiku implosions.
The last project from Simon and Nat is essentially a way of viewing groups (slices of activity) on Twitter ...and it exposes a security flaw in the JSON-P API too.
This is seriously brilliant. Starting from a single URL (adactio.com), a lifestream is creating based on XFN rel="me" links. David Singleton wins the internet.
Tumblr has just added a shedload of new features.
I saw afeeda demo'd at Reboot. It looks like a handy place to create a lifestream. Here's one I made earlier.
There's now a blog dedicated to the Lifestream concept. It looks the idea (and the word I coined) has legs.
A nice subtle lifestream implementation complete with fading over time.
A very nice life stream implementation that uses APIs to pull in images (though the underlying markup is a bit weird).
Chris J. Davis has turned my life stream thingy into a plug-in for Wordpress. Nice!